If you can listen to them side by side and can hear a difference worth the money, then upgrade to the Premium.
If you cannot do a side by side comparison, I'd stay with the Prologue 2 and save your money until you can afford an upgrade that will make a big difference in the sound of your integrated. It is not worth the cost and trouble of selling your Prologue 2 and buying a different integrated for a small improvement in sound.
The Prologue 2 is a very good integrated. Stay with it until you get a chance to hear something you like better. The differences you read about in reviews are not always as noticeable as the review makes you think.
I hope all is well in Slovakia.
If you cannot do a side by side comparison, I'd stay with the Prologue 2 and save your money until you can afford an upgrade that will make a big difference in the sound of your integrated. It is not worth the cost and trouble of selling your Prologue 2 and buying a different integrated for a small improvement in sound.
The Prologue 2 is a very good integrated. Stay with it until you get a chance to hear something you like better. The differences you read about in reviews are not always as noticeable as the review makes you think.
I hope all is well in Slovakia.